Tools for building AI agents — No subscription

Vaaya

LiveWatched 24d

One connector that plugs your AI agent (Claude, ChatGPT, Cursor or Codex) into outside tools for building demos, running outreach and researching your market.

FreeNo subscription

What to know▼

How it works: A single connector that plugs into AI agents in Claude, ChatGPT, Cursor or Codex, sitting between the agent and paid outside services (web search, scraping, contact enrichment, image/video generation, email, phone calls, code sandboxes) so the agent can call them without you creating separate vendor accounts or managing API keys.
What's different: You pay per successful call in cents rather than maintaining multiple separate subscriptions; failed calls cost nothing.
Pricing: Starts with free credits, no card required, then pay-per-call with no subscription.
Best for: Developers and teams building AI agent workflows who want their agent to reach outside tools (outreach, research, demos) without managing each vendor integration separately.

Details →

Velokey

LiveWatched 14d

A pay-per-token API gateway giving developers access to 100+ AI models without a subscription commitment.

No subscription

What to know▼

How it works: Pay-per-token API gateway giving access to 100+ AI models.
Pricing: Pay per token, no subscription.
Best for: Developers.

Details →

Cubeshell

LiveWatched 11d

MCP connector giving AI coding agents like Claude and Codex access to sales/outreach APIs — company research, contact verification, job-change tracking — without separate subscriptions per tool.

No subscription

What to know▼

How it works: One MCP connection exposes multiple GTM data sources; pay only when a tool actually runs.
Pricing: No subscription, pay-per-use
Best for: Developers building AI sales/outreach agents.

Details →

ApexApi

LiveWatched 10d

A single API that routes calls to 138 AI models from 21 providers, letting you point existing OpenAI-format code at one endpoint.

No subscription

What to know▼

How it works: OpenAI-compatible API with smart routing and automatic failover across providers
What's different: pay-per-call credits, no subscription, per-key spend limits and cost dashboard
Best for: developers who want one integration for many AI model providers

Details →

Willow

LiveWatched 20d

A local-first Mac AI agent you own outright for a one-time fee, using your own API key or a fully offline Ollama model, built for technical builders.

Works offlineNo subscription

What to know▼

How it works: A local-first desktop AI agent that runs on your Mac, can drive the browser and desktop, and completes multi-step tasks while data stays on-device.
What's different: A one-time lifetime fee instead of a subscription, with your own API key/model or a fully offline Ollama setup.
Pricing: €299 lifetime, no subscription.
Best for: Technical builders who want to own their AI agent outright rather than rent a cloud subscription.

Details →